INFO: task udevd:6374 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:22568 pid:6374  tgid:6374  ppid:5294   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb90
 do_read_cache_folio+0x1aa/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_POWERTEC+0x8c/0xf30
 bdev_disk_changed+0x75f/0x14b0
 blkdev_get_whole+0x380/0x510
 bdev_open+0x31e/0xd30
 blkdev_open+0x3a8/0x510
 do_dentry_open+0x953/0x13f0
 vfs_open+0x3b/0x340
 path_openat+0x2ee5/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f18973169a4
RSP: 002b:00007fff608d7b00 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000056204f710de0 RCX: 00007f18973169a4
RDX: 00000000000a0800 RSI: 000056204f6f93f0 RDI: 00000000ffffff9c
RBP: 000056204f6f93f0 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000056204f70c800 R14: 0000000000000002 R15: 000056204f6f8910
 </TASK>

Showing all locks held in the system:
2 locks held by ksoftirqd/1/23:
1 lock held by khungtaskd/34:
 #0: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5674:
 #0: ffff8881067150a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900028782f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
2 locks held by kworker/u8:4/5921:
 #0: ffff888136639f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140
 #1: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run4+0x19c/0x4a0
1 lock held by udevd/6340:
 #0: ffff888021d39358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by udevd/6374:
 #0: ffff888021d3d358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
2 locks held by cmp/18913:

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 18915 Comm: rm Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__kasan_slab_free+0x17/0x80
Code: 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 4c 8b 05 65 a8 80 0d 48 89 f0 4c 29 c0 48 3d 00 00 20 00 <0f> 92 c0 4d 85 c0 41 0f 95 c0 85 c9 75 44 41 20 c0 75 3f 41 56 53
RSP: 0018:ffffc9000f96fd60 EFLAGS: 00000286
RAX: ffffffff124d6600 RBX: ffff8880488d6600 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8880488d6600 RDI: ffff888100014640
RBP: 0000000000000000 R08: ffff888136400000 R09: 1ffffffff1f470e6
R10: dffffc0000000000 R11: fffffbfff1f470e7 R12: ffffea0001223400
R13: 0000000000000000 R14: ffff888100014640 R15: ffffffff82373754
FS:  0000000000000000(0000) GS:ffff8880b8616000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4b9b4a3020 CR3: 0000000045d68000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 kmem_cache_free+0x18f/0x400
 user_path_at+0x44/0x60
 do_faccessat+0x5d8/0xd90
 __x64_sys_access+0x61/0x70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4b9b4c093e
Code: 01 00 48 83 c8 ff c3 b8 08 00 00 00 0f 05 48 3d 00 f0 ff ff 76 0c f7 d8 89 05 2e 49 01 00 48 83 c8 ff c3 b8 15 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 12 49 01 00 48 83 c8 ff c3 b8
RSP: 002b:00007fffe092ff58 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007f4b9b4d50d8 RCX: 00007f4b9b4c093e
RDX: 000000000000075c RSI: 0000000000000004 RDI: 00007f4b9b4cc810
RBP: 00007fffe0930200 R08: 0000000000000000 R09: 00007f4b9b4c6024
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4b9b4cc810 R14: 0000000000000000 R15: 00007f4b9b4d52a0
 </TASK>
